The anomalous Hall effect in disordered band ferromagnets is considered in the framework of quantum transport theory. A microscopic model of electrons in a random potential of identical impurities including spin-orbit coupling is used. The Hall conductivity is calculated from the Kubo formula for both, the skew scattering and the side-jump mechanisms. The recently discussed Berry phase induced ...

We investigate the extrinsic spin Hall effect in the electron gas model due to magnetic impurities, by focusing on Ceand Yb-impurities. In the dilute limit, the skew scattering term dominates the side jump term. For Ce-impurities, the spin Hall angle αSH due to skew scattering is given by −8πδ2/7, where δ2 (≪ 1) is the phase shift for d (l = 2) partial wave. Since αSH reaches O(10 ) if δ2 > ∼ 0...

We review recent studies of the shot noise of spin-polarized charge currents and pure spin currents in multiterminal semiconductor nanostructures, while focusing on the effects brought by intrinsic Rashba spin-orbit (SO) coupling and/or extrinsic SO scattering off impurities. By generalizing the scattering theory of quantum shot noise to include the full spin-density matrix of electrons injecte...

We demonstrate that the spin Hall effect in a thin film with strong spin-orbit scattering can excite magnetic precession in an adjacent ferromagnetic film. The flow of alternating current through a Pt/NiFe bilayer generates an oscillating transverse spin current in the Pt, and the resultant transfer of spin angular momentum to the NiFe induces ferromagnetic resonance dynamics. The Oersted field...

The H component of geomagnetic field shows a daytime maximum in low iatitudes. It is explained as due to two circular(Sq)current systems in the ionospheric E region, with foci at about 30° latitude, one in each hemisphere, Northern and Southern. At the dip equator, the two current systems accentuate each other. In addition, the vertical Hall currents are greatly inhibited causing alarge, vertic...

The possibility of non-contact determination of Hall current structure in the thruster is considered in order to use this information for operational processes diagnostics during flight. The scheme of the diagnostics and the algorithm for experimental data processing are developed. Using the MHD equations, an example of interpretation of hypothetical malfunction based on data on the Hall curren...

A periodic composite of four isotropic phases with an almost antisymmetric effective Hall matrix is constructed. This is done through the use of a microstructure, with high contrast conductivity, which acts to twist the direction of the induced Hall field. For an applied current along the y3 axis and a magnetic field h in the y1-y2 plane the Hall field will be essentially parallel, rather than ...

The calculation of Hall potentials m a rectangular Hall plate 1s treated for the case m which the device 1s subJect to a magnetic field B that is mhomogeneous m the y-dlrectlon perpendicular to the direction of mltlal current flow The potentials are presented m the form #&‘) = const IwIdth B(y) G(y,?‘)dy for the normal Hall effect (F” 1s the posltlon vector) Analytical expressions are given for...

The rule relating the observed Hall coefficient to the spin and charge responses of the uniform doped Mott insulator is derived. It is essential to include the contribution of holon and spinon three-current correlations to the effective action of the gauge field. In the vicinity of the Mott insulating point the Hall coefficient is holon dominated and weakly temperature dependent. In the vicinit...